Just for clarity though, I will answer The highest resolution LWC caters to is qHD. This resolution is 540x960, which means your stock background pictures need to be at least 1080x960. My presumption is that older resolutions of 960x854 and 960x800 weren't very HD friendly. Videos taken with phones that had those specs, didn't scale well with 720p and 1080p videos (we actually ran into this issue). So phones started coming out with new resolutions, which are much more HD friendly. Anyway, this is just a speculation
maybe i was wrong to ask for deletion, this actually can prove very helpful to many users and maybe should even be stickied. it's a great guideline for many users.
Getting back to the at least 1080x960 resolution... If you do end up using a 1080x960 image, it might be very difficult to crop it right on the edge, because the cropping border takes up that 1 extra pixel and images can't be used (its cropped to 1078 for example, a pixel on each side), so I always resize those wallpapers to 1085x965 pixels in Photoshop, once in the LWPC, it automatically crops it and its ready to be set. (in Photoshop its easily done by going to Image tab - Image Size option. Keep constrain proportions checked to avoid skewed images). Cheers!
Technically you can use whatever resolution you want as long as it's at least the size of the high-res crop (1080x960). The low-res crop is 640x480. But, 1080x960 is not the best choice. Why? Because, if you want to use the entire height of the image then the low res crop won't fit. The low-res crop has a wider aspect ratio (640 / 480 = 1.33 vs 1080 / 960 = 1.125) and 1080 is not wide enough to accommodate a height of 960 if your aspect ratio is 1.33. Of course, you can ignore this, but you'll have to make your low-res crop height smaller thus making people who have those type of screens see less of your image vertically. In general, a difference in height looks worse to a person, for this reason I recommend that you "trim" the width of an image instead, it's less noticable. So what's the minimum resolution that enables us to keep the same vertical area for both crop sizes? Fortunately, a little math solves this problem. We know that the minimum height we need to have is 960 and given the minimum aspect ratio of 1.33, or 4/3 to be exact, it's easy t figure out the width. w/h = aspect ratio. w = aspect ratio x h w = 4/3 x 960 = 1280 So the minimum resolution that would scale nicely for both screen sizes is: 1280 x 960 Note: In general, images must meet two criteria: 1. Have a minimum height of 960 2. Have a minimum aspect ratio of 4/3
